The following are the steps we used to create a zombie look:
1.) Open a stock photo image of a face with eyes. The image should be greater than 900 x 1200 pixels. Smaller images are harder to work with and look bad when enlarged while larger images shrink easier.
2.) Save your original stock photo in case you mess up at a later point by pasting a copy of the stock image into a new layer.
3.) Remove the exisiting background with a dark color.
4.) Enlarge the image. Begin filling in the eyes with red by using a soft-edged brush and the smude tool. Start with the corner of each each and then smudge both of them.
5.) Add a dark liner around each eye by using the brush tool and then smudge the liners.
6.) Add a red "blood" look to the mouth by using the brush tool.
7.) Drag in a picture of a cracked texture and set it to overlay. Place the cracked texture over the face. Then use the eraser to erase parts that don't cover the skin or cover unwanted parts of the picture.
8.) As you finish with adding the cracked texture over the skin and erasing the unwanted parts, go to Filter > Liquify > Modify the face, and then press "OK."
9.) Using the soft brush tool, cover the hair with a soft black color, and then use the eraser to fix any imperfections.10.) To make the picture have a darker look to it, change the fill tool to black, color over the entire picture, change the setting to hue, and then adjust the opacity.
